No, but if unexposed to light for months or years straight, the melanin in your eye will decrease, and your eyes will become a lighter color. I don't think it will be permanent though, unless you were without light for many many years. You will also become more accustomed to the dark and you will be able to see better in the dark than others.
Yes, because the retina is like the projection screen for your vision.
Macular degeneration is a disease of the eye that causes blindness by destroying the retina.
Reappose means to put next to/adjacent to again.
color blindnesss
Yes, color blindness can be corrected through the process of genetic enginering.
Too much exposure to visible light can cause damage to your retina.
Looking directly at the sun can damage the retina and/or cause blindness.
A hit in the head can leave you blind. In some cases the retina can actually become detached. These injuries could lead to permanent blindness.
Painful
It can if you are looking directly at it when it explodes, the UV light burns the retina.
A starburst could be a result of a detached retina. Definitely see your ophthalmologist immediately.
The purpose of photocoagulation therapy is to reattach a torn or detached portion of the retina and/or prevent further growth of abnormal blood vessels in the retina that can cause a detachment.
Retinal detachment is when the retina, the part of the back of the eye which contains numerous blood vesses, because detached from the wall of the eyeball. It can be serious and can lead to blindness if left untreated. It is most commonly caused by high blood pressure. The high blood pressure causes pockets to form between the retina and the other lays of tissues in the eye. Over time, the suction between the wall of the eye and retina is gone and the retina slowly detaches from the eye. It is not usually noticed until the retina is actually detaching from the eye. During this time you may see blurriness, floaters or blindness. Fortunatly, the retina can be surgically reattached to the eye and vision can be restored if treated as soon as possible.
When your blood sugar is too high damage can be done to the blood vessels, including those in your eyes. When this happens new blood vessels may develop over the retina causing scar tissue to develop. This can result in a detached retina and cause blindness if not taken care of. If a blood vessel grows on the iris it can lead to glaucoma as well.
small clots that can block blood flow to the retina of the eye and can cause sudden blindness in an eye
Yes, if the coughing is extreme and consistent for a long duration of time. This tends to put excessive pressure on the retina, thus possibly leading to a tear or detachment.
Yes, there is a procedure that uses a laser to "tack" a detached retina back onto the eye. That can restore sight in blind spots that result from a detached retina.
While insulin can have side effects (particularly when more than prescribed is used), it does not cause blindness. Diabetes can cause retinal (eye) problems, though, which could be the reason some people believe insulin to cause eye problems.